Air-flushing apparatus.



A. PRIESTMAN.

AIR FLUSHING APPARATUS.

APPLICATION FILED APR.17, 1911. RENEWED NOV. 9, 1912.

1,048,206. Patented Dec. 24, 1912.

2;: 5555 li fii/ :ii fgii 2:1; ?;1 i 5 2 5 /W ALBERT PRIESTMAN, 0F PHILADELPHIA, PENNSYLVANIA.

AIR-FLUSHING APPARATUS.

Specification of Letters Patent.

Patented Dec. 24,1912.

Application filed April 17, 1911, Serial No. 621,488. Renewed November 9, 1912. Serial No. 730,499.

To all whom it may concern Be it known that I, ALBERT PRIESTMAN, a subject of the. King of England, and a resident of the city and county of Philadelphia, State of Pennsylvania, have invented an Improvement in Air-Flushing Apparatus, of which the following is a specification.

In the application of Hubert Beddoes, Ser. No. 540,432, filed January 27, 1910, is described an apparatus for flushing air in which, upon the accumulation of sufficient head acting upon a hydrostatically controlled pressure accumulator, such as an airbell, a liquid seal is forced in a pipe leading from the accumulator, and a charge of air rushes through the air pipe into an accumulator, from which it may pass to air controlled devices. By this means a sufiicient volume of air may be flushed from a single 'hydrostatically controlled accumulator on each operation to operate several separate and independent devices, the surplus air passing from one device to the next. The flushing of the air takes place each time the liquid in the vessel in which the accumulator is placed attains sufficient head to force the liquid-seal in the pipe leading to the receiver. In many cases, however, it is desirable that the air should be flushed only at intervals with reference. to the rise and fall of the liquid in the controlling tank. For example, it may be desirable that certain air controlled devices, such as air locks, should be operated only once in twenty four hours, while the controlling tank should be filled and emptied hourly.

It is one of the objects of the present invention to accomplish this result; and this I do by interposing, between the hydrostatically controlled bell and the receiver, a pressure-accumulator having a larger capacity than the hydrostat-ieally controlled bell. The water sealed air pipe from the hydrostatically controlled bell leads to this large accumulator, and from it a water sealed air pipe leads to the receiver. On each operation of the hydrostatically controlled bell air is forced into the large accumulator, but the air is not flushed therefrom until suflicient pressure is accumulated by successive operation of the hydrostatieally controlled bell to force the seal in the pipe leading to the receiver.

It is also an object of the invention to enable 2. large charge of air to operate successively upon air controlled devices. Thus the amount of air flushed once a day, may be made to operate air controlled devices hourly.

By my apparatus successive air flushing operations at short intervals may be used to flush a relative large quantity of air at long intervals, and this large quantity of air thus flushed may be made to again successively flush small quantities of air at short intervals.

In the drawings: Figure 1 is a vertical sectional View of a hydrostatieally controlled air-flushing device embodying the invention; and Fig. 2 is a similar View illustrating that form of the apparatus in which the air is flushed intermittently from the receiver.

a is the 'hydrostatically controlled air-bell submerged in the liquid in the tank or bed Z), ifnnwhich the level of the liquid rises and g is the relatively large accumulator submerged in liquid in the chamber m.

e is an air-pipe leading from the bell a and having an upturned end e forming a water-seal leading into the accumulator g.

c is an air-bell, relatively small with reference to the accumulator g submerged in liquid in the chamber (Z.

k is an air-pipe leading from the accumulator and having an upturned end It form ing a water-seal leading into the bell c.

f is the discharge pipe from the bell or receiver a which may lead to any air controlled devices. In the apparatus shown in Fig. 2 this pipe f terminates in a water seal f opening into a small bell i submerged in liquid in the tank a, and from this bell 2' a discharge pipe j leads to air controlled devices. In this apparatus the pipe it leading from the accumulator g to the air-bell c is provided with a throttling valve 74.

When the liquid reaches a sufficient level to force the water seal 0' in the pipe 6, a charge of air will be forced from the bell a into the accumulator g. Owing to the greater size of the accumulator g and the strength of the seal it, this charge of air will not be sufficient to force the seal it and discharge air into the bell c. The operation will, therefore, be repeated each time the liquid in b attains the necessary head, until suflicient pressure is accumulated in the accumulator g to force the seal it. The air will then rush from the accumulator 9 into the receiver 0 and will pass thence through the pipe f to the air controlled devices. By properly proportioning the bell a and accumulator 9 this flushing of the air may take place at predetermined intervals with reference to the rise and fall of the liquid in the tank I).

In the form of the apparatus shown in Fig. 1, when the seal 72. is forced by the accumulated pressure in the accumulator g, the entire charge of air will rush into the receiver 0 and pass thence through the pipe f. In the form of the apparatus shown in Fig. 2, however, the flow of the air from the accumulator 9 into the receiver 0 may be regulated by the adjustment of the valve is, and as soon as the pressure in the receiver 0 is suflicient to force the seal f a relatively small charge of air will pass through the pipe f into the hell 2' and thence through the pipe 7', so that just as successive operations of the bell a may be used to produce each operation of the accumulator g, each operation of 9 may be made to produce successive operations of the bell i.

What I claim is as follows:

1. In apparatus for the purpose described, the combination of an air-pipe having a liquid-seal, a hydrostatically controlled airbell communicating with said air-pipe, a sealed pressure accumulator of larger size than said hydrostatically controlled air bell inclosing the liquid seal of said air pipe, an air-pipe leading from said accumulator and having a liquid seal, a sealed receiver inclosing the liquid seal of the air-pipe leading from said accumulator, and a delivery pipe for the flushed air leading from the receiver.

2. In apparatus for the purpose described, the combination of a hydrostatically controlled air-bell, a sealed pressure accumulator of larger size than said air-bell, a sealed receiver, an air-pipe leading from the air-bell to the accumulator and having a liquid seal, an air-pipe leading from the accumulator to the receiver and provided with a liquid seal, and an air-discharge pipe from the receiver.

3. In apparatus for the purpose described, the combination of a hydrostatically controlled air-bell, a sealed pressure accumulator of larger size than said air-bell, a sealed receiver, an air-pipe leading from the air-bell to the accumulator and having a liquid seal, an air-pipe leading from the accumulator to the receiver and provided with a liquid seal, means to control at will the flow of the air from the accumulator to the 7 receiver, and an air-discharge pipe from the receiver.

4c. In apparatus for the purpose described, the combination of a hydrostatically controlled air-bell, a sealed pressure accumulator of larger size than said air-bell, a sealed receiver, an air-pipe leading from the airbell to the accumulator and having a liquid seal, anjair-pipe leading from the accumulator to the receiver and provided with a liquid seal, a valve in said pipe, and an airdischarge pipe from the receiver.

5. In apparatus for the purpose described, the combination of a hydrostatically con trolled air-bell, a sealed pressure accumulator of larger size than said air-bell, a sealed receiver, an air-pipe leading from the airbell to the accumulator and having a liquid seal, an air-pipe leading from the accumulator to the receiver and provided with a liquid seal, an air-discharge pipe from the receiver having a liquid-seal, and an air-bell of smaller size than the accumulator inclosing said liquidseal in the air-discharge pipe from the receiver.

6. In apparatus for the purpose described, the combination of a hydrostatically controlled air-bell, a sealed pressure accumulator of larger size than said air-bell, a sealed receiver, an air-pipe leading from the airbell to the accumulator and having a liquid seal, an air-pipe leading from the accumulator to the receiver and provided with a liquid-seal, an air-discharge pipe from the receiver having a liquid-seal, an air-bell of smaller size than the accumulator inclosing said liquid-seal in the air-discharge pipe from the receiver, and means to control at will the flow of the air from the accumulator to the receiver.

7. In apparatus for the purpose described, the combination of a hydrostatically controlled air-bell, a sealed pressure accumulator of larger size than said air-bell, a sealed receiver, an air-pipe leading from the airbell to the accumulator and having a liquid seal, an air-pipe leading from the accumulator to the receiver and provided with a liquid seal, a valve in said pipe, an air-dis charge pipe from the receiver having a liquid seal, and an air-bell of smaller size than the accumulator inclosing said liquidseal in the air-discharge pipe from the receiver.

8. In apparatus for the purpose described, the combination of a sealed pressure accumulator, a sealed receiver, an air-pipe leading from the accumulator to the receiver and having a liquid-seal, an air-bell of smaller size than the accumulator having a discharge-pipe, an air-pipe leading from the receiver to the air-bell and having a liquidseal, and means to control at will the flow of the air from the accumulator to thereceiver.

9. In apparatus for the purpose described, the combination ofa sealed pressure accumulator, a sealed air-bell of relatively smaller size than the accumulator, an airpipe having a liquid seal leading from the accumulator and adapted to supply air therefrom to the air-bell, and means to control at will the flow of the air through said 10 air-pipe.

In testimony of which inventionyl hereunto set my hand;

ALBERT PRIE STMAN.

trol at will the flow of the air through said air-pipe.

10. In apparatus for the purpose described, the combination of a sealed pressure accumulator, a sealed air-bell of relatively smaller size than the accumulator, an airpipe having a liquid seal leading from the accumulator and adapted to supply air therefrom to the air-bell, and a valve to con- Witnesses:

R. M. KELLY, D. J. MCCOSKEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

